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[2009-11-09 20:53 UTC] crisp at xs4all dot nl

Using 5.3.2-dev almost the same results:
valid addresses marked as invalid:
a:b:c:d:e::1.2.3.4
::0:a:b:c:d:e:f
0:a:b:c:d:e:f::
invalid address marked as valid:
::01.02.03.04
So basically it resolves just one of the cases and is still far from RFC-compliant

The authority on text representation of IPv6 addresses is RFC 4291 (I think).
This authority is accepted by the authors of RFC 5952 who quote RFC 3986 only in
the context of associating port numbers with IPv6 addresses.
The first three examples given are valid according to RFC 4291, but in a form
deprecated by RFC 5952. The Robustness Principle suggests we should accept them
from others but not generate IPv6 addresses in this form ourselves. Therefore
validating these addresses depends on the context - are we checking to see if we
can possibly use them or are we checking to see we are generating absolutely
spotless addresses ourselves?
The 4th & 5th examples given are also valid according to RFC 4291. In fact this
RFC contains an example in exactly the same format in
http://tools.ietf.org/html/rfc4291#section-2.2
As it stands all 5 examples are valid according to RFC 4291 but none of them
complies with RFC 5952.
The RFC 5952 recommendation for them would be
a:b:c:d:e:0:1.2.3.4
::a:b:c:d:e:f
0:a:b:c:d:e:f:0
::1.2.3.4
::255.255.255.255

[2010-11-03 14:12 UTC] dominic at sayers dot cc

Oops. Example 5 is of course invalid. My mind invented a :: when there wasn't one.

Automatic comment from SVN on behalf of cataphract
Revision: http://svn.php.net/viewvc/?view=revision&amp;revision=305186
Log: - Fixed the filter extension accepting IPv4 octets with a leading 0 as that
belongs to the unsupported &quot;dotted octal&quot; representation.
- Fixed bug #53236 (problems in the validation of IPv6 addresses with leading
and trailing :: in the filter extension).
- Fixed bug #50117 (problems in the validation of IPv6 addresses with IPv4
addresses and ::).